How many different things does STR refer to?
How many different things does STR refer to? I emailed a company and asked what the STR was on one of their converters.
Their reply: What is this STR you're refering to?
So my question here is: how many things start with the letters STR when refering to torque converters?
After I get a reply back I'll post some screen shots of their website claims, and my emails.
You will be surprised who it is. (maybe)
Their reply: What is this STR you're refering to?
So my question here is: how many things start with the letters STR when refering to torque converters?
After I get a reply back I'll post some screen shots of their website claims, and my emails.
You will be surprised who it is. (maybe)
I was looking at converters, I'm not sure what STR I want to get. I'd like to find out what STR the converter in my nova had so I could get an idea on what x.xx STR feels like. I might be able to spend $600.
Did you read the first post?
I asked a converter company what the STR was on a peticular converter they sell.
How the hell am I going to ask the question if I don't know what it means?
What I'm asking this forum is WHAT ELSE COULD IT MEAN.
Why am I asking? Because this converter company is a very very large performance converter company. Don't you think they should know what the STR for each of their converters?
Instead the guy asks me what STR is.
Is this coming through in english, I do not understand why I have to go through such great detail to get people to understand my god dman questions.
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Yet I don't see any Yank converters with STR's below 2.0
This quote below, and Yanks description of their converters, and the lack of Yank converters with STR's lower than 2.0 make this quote kind of pointless, or someone wrote it backwords. It's straight from their "tech info"
For example: A competitor's converter with a claimed stall torque ratio of 2.5 (red graph line) would typically have an efficiency of around 90% at high RPMs (5,000 plus). That means 300 flywheel horsepower would translate to 270 horsepower at the transmission input-shaft. A Super Yank Converter with a stall torque ratio of 1.6 (green graph line) has efficiency in the 97% range. That means a 300 horsepower engine would transmit 291 horsepower to the transmission input-shaft: A gain of 21 horsepower! For an LS-1 customer dyno sheet showing 97% efficiency press here.
As you can see, the converter with the lower stall torque ratio will multiply torque for a longer period of time than the converter with a higher stall torque ratio. As most of you know, most racing occurs above 3,000 RPMs. That's why the lower stall torque ratio often wins the race:
*Lower stall torque ratio is gentler on the tires at the initial launch, but it will pull harder for the remaining 1,305 ft. of the 1/4 mile. Less races will be lost at the starting line from excessive wheelspin. Lower stall torque ratio will be more efficient and transmit more torque and horsepower to the tires. This translates into lower ETs and higher trap speeds!
As you can see, the converter with the lower stall torque ratio will multiply torque for a longer period of time than the converter with a higher stall torque ratio. As most of you know, most racing occurs above 3,000 RPMs. That's why the lower stall torque ratio often wins the race:
*Lower stall torque ratio is gentler on the tires at the initial launch, but it will pull harder for the remaining 1,305 ft. of the 1/4 mile. Less races will be lost at the starting line from excessive wheelspin. Lower stall torque ratio will be more efficient and transmit more torque and horsepower to the tires. This translates into lower ETs and higher trap speeds!
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Verdad Gallardo Reading above. I want to get a converter with a low STR. Maybe I'm blind but I don't see a Yank converter with a 1.6 STR
Yet thats what the whole graph on their site is about---a Yank with a 1.6 STR being SO MUCH BETTER than the competitions 2.5 STR. Then why the hell are all Yanks LS1 converters around 2.5 STR
I want to know why, not get this because XXXXX
Their explaination makes no sense, do I need to say that again.
Yet thats what the whole graph on their site is about---a Yank with a 1.6 STR being SO MUCH BETTER than the competitions 2.5 STR. Then why the hell are all Yanks LS1 converters around 2.5 STR
I want to know why, not get this because XXXXX
Their explaination makes no sense, do I need to say that again.
PLEASE READ THIS VERY CAREFULLY, ESPECIALLY IF YOU MAKE A HABIT OF ASKING QUESTIONS AND MAKING ASSUMPTIONS WITHOUT READING THE ENTIRE POST.
All I want to do is find out what the STR was on a converter that I used to own THATS IT.
WHY? it doesn't matter, I just want to know.
All I want to do is find out what the STR was on a converter that I used to own THATS IT.
WHY? it doesn't matter, I just want to know.
LOL, yea but is I don't know what STR is just a different way of explaining it?
Now I'm looking at Yanks site and their example of STR makes no sense at all.
I understand whats being said, and it makes no sense.
Now I'm looking at Yanks site and their example of STR makes no sense at all.
I understand whats being said, and it makes no sense.
Maybe TCI just calls it something else such as 'torque multiplier'. They're site only refers to the bigger stalls as having more torque multiplication. Otherwise, something is wrong over there.
And "product specialist" probably means that he has a list of converters that says which ones best fit certain applications.
And "product specialist" probably means that he has a list of converters that says which ones best fit certain applications.
I'm getting the vibe that you feel like you're taking crazy pills because everyone seems to be contradicting themselves or just being straight stupid. From the info you have in front of you, I understand where you're coming from 
.
I was pretty sure most people steered clear of TCI nowadays and now I just have another reason that leads me to that being the right conclusion. The quote from Yank may have been before they switched up their whole line, but it is CORRECT. Lower STR = more efficiency up top and less hit off the line.
Now I've been looking into converters for awhile, but can't afford one just yet. When I can afford it though, I'll be definitely looking for a low STR because street tires = no traction and I'd much rather pull at the end where I can put the power to the ground.
I hope that helps somewhat, good luck on your search!
. I was pretty sure most people steered clear of TCI nowadays and now I just have another reason that leads me to that being the right conclusion. The quote from Yank may have been before they switched up their whole line, but it is CORRECT. Lower STR = more efficiency up top and less hit off the line.
Now I've been looking into converters for awhile, but can't afford one just yet. When I can afford it though, I'll be definitely looking for a low STR because street tires = no traction and I'd much rather pull at the end where I can put the power to the ground.
I hope that helps somewhat, good luck on your search!
And since every converter company on this site won't say **** to me, who cares right. I'm just one sale they don't get, and I sound like a problematic customer thats going to bitch about EVERYTHING.
Thats not true, I just want sense of what I'm buying.
Look at every converter company here, their descriptions of each converter.
It's everything from "this will really wake your ride up" to "this works well with other cars like yours"
My theory is simple, I tell them what I want. If it performs like I wanted it to thats the end of the bussiness transaction. You know it actually does sound like I'd be a problematic customer if I bought one that'll "wake up my ride"
I went through the same thing you did, after viewing the sticky from yanks explanation of STR.
I ended up speaking to Frank over at Performabuilt for my car and set up and he did a great job explaining STR to me. And the final explanation was what sold me " from experience and driving different STR stalls, your set will feel the best with a 1.69 STR"
That sold me
Mind you i was looking for a TQ that is street only, and wanted it to feel tight rather then loose.
I ended up speaking to Frank over at Performabuilt for my car and set up and he did a great job explaining STR to me. And the final explanation was what sold me " from experience and driving different STR stalls, your set will feel the best with a 1.69 STR"
That sold me
Mind you i was looking for a TQ that is street only, and wanted it to feel tight rather then loose.
And I'm not looking for a track only converter.
I had a converter in my SS for a week, because it was way too loose down low. I couldn't stand it. And I've had the trans out of this car enough to where I'm really, really not going to be happy to pull it out just to install another loose converter that I paid $600-$900 for.
From my small understanding
The efficiancy will have alot to do with the feel, stock converter in my SS has a 1.89 STR, so i didn't want anything above 1.89 STR. The stall also has alot to do w/loose vs. tight and other factors like gear ratio's,HP, etc. since i'm street only (maybe a few passes) with approxiamately 375 HP,3:23 gears, I got a 3000 stall with a 1.69STR. That was my rationale along with Franks input...oh yea, i also bought a lvl II tranny from Performabuilt to put the new TQ in
The efficiancy will have alot to do with the feel, stock converter in my SS has a 1.89 STR, so i didn't want anything above 1.89 STR. The stall also has alot to do w/loose vs. tight and other factors like gear ratio's,HP, etc. since i'm street only (maybe a few passes) with approxiamately 375 HP,3:23 gears, I got a 3000 stall with a 1.69STR. That was my rationale along with Franks input...oh yea, i also bought a lvl II tranny from Performabuilt to put the new TQ in